RVM, I should have said: This did happen after rebooting, but as far as I noticed, not immediately. And I have rebooted again and it has not restarted so far. It seemed to me that something was triggering it, but I have not noticed what. I will keep an eye on it.
I keep finding that SoundTap is open and ready to start recording when I haven't started it. I am on Windows 10 (64-bit). It is not in my Startup or Task Scheduler in Windows. What is causing this and how do I stop it? The first entry it shows is "Successfully connected to driver" at a time before I started using my computer in the morning.